What number are you?
Its estimated about 100 billion humans have lived on earth since their evolution began between 400,000 - 250,000 years ago
Sunday, July 27, 2008
Time (Observation: 2/5)
Its estimated about 100 billion humans have lived on earth since their evolution began between 400,000 - 250,000 years ago
Friday, July 25, 2008
Space (Observation: 1/5)
Can you spot Earth in this vastness?
Artist's concept of the Milky Way galaxy
Links:
http://planetquest.jpl.nasa.gov/news/hurt_milky_way_image.html
http://www.news.wisc.edu/11405
http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/021127a.html
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